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Commit | Line | Data |
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c906108c | 1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1989, 1990, 1991, 1998, 2000, 2001, 2002 Free | |
4 | Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
c906108c | 22 | #include "symtab.h" |
c906108c | 23 | #include <ctype.h> |
f77b92bf | 24 | #include "gdb_regex.h" |
5f8a3188 | 25 | #include "gdb_string.h" |
d318976c | 26 | |
8b93c638 | 27 | #include "ui-out.h" |
c906108c | 28 | |
d318976c FN |
29 | #include "cli/cli-cmds.h" |
30 | #include "cli/cli-decode.h" | |
53a5351d | 31 | |
b2875cc0 AC |
32 | #include "gdb_assert.h" |
33 | ||
c906108c SS |
34 | /* Prototypes for local functions */ |
35 | ||
a14ed312 | 36 | static void undef_cmd_error (char *, char *); |
c906108c | 37 | |
a14ed312 KB |
38 | static struct cmd_list_element *find_cmd (char *command, |
39 | int len, | |
40 | struct cmd_list_element *clist, | |
41 | int ignore_help_classes, | |
42 | int *nfound); | |
6837a0a2 | 43 | |
c85871a3 | 44 | static void help_all (struct ui_file *stream); |
d318976c | 45 | \f |
9f60d481 AC |
46 | /* Set the callback function for the specified command. For each both |
47 | the commands callback and func() are set. The latter set to a | |
48 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
49 | ||
50 | static void | |
51 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
52 | { | |
53 | c->function.cfunc (args, from_tty); /* Ok. */ | |
54 | } | |
55 | ||
56 | void | |
9773a94b | 57 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
58 | { |
59 | if (cfunc == NULL) | |
60 | cmd->func = NULL; | |
61 | else | |
62 | cmd->func = do_cfunc; | |
63 | cmd->function.cfunc = cfunc; /* Ok. */ | |
64 | } | |
65 | ||
66 | static void | |
67 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
68 | { | |
69 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
70 | } | |
71 | ||
72 | void | |
9773a94b | 73 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
74 | { |
75 | if (sfunc == NULL) | |
76 | cmd->func = NULL; | |
77 | else | |
78 | cmd->func = do_sfunc; | |
79 | cmd->function.sfunc = sfunc; /* Ok. */ | |
80 | } | |
81 | ||
bbaca940 AC |
82 | int |
83 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
84 | void (*cfunc) (char *args, int from_tty)) | |
85 | { | |
86 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
87 | } | |
88 | ||
7d0766f3 AC |
89 | void |
90 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
91 | { | |
92 | cmd->context = context; | |
93 | } | |
94 | ||
95 | void * | |
96 | get_cmd_context (struct cmd_list_element *cmd) | |
97 | { | |
98 | return cmd->context; | |
99 | } | |
100 | ||
1868c04e AC |
101 | enum cmd_types |
102 | cmd_type (struct cmd_list_element *cmd) | |
103 | { | |
104 | return cmd->type; | |
105 | } | |
106 | ||
5ba2abeb AC |
107 | void |
108 | set_cmd_completer (struct cmd_list_element *cmd, | |
109 | char **(*completer) (char *text, char *word)) | |
110 | { | |
111 | cmd->completer = completer; /* Ok. */ | |
112 | } | |
113 | ||
9f60d481 | 114 | |
c906108c SS |
115 | /* Add element named NAME. |
116 | CLASS is the top level category into which commands are broken down | |
117 | for "help" purposes. | |
118 | FUN should be the function to execute the command; | |
119 | it will get a character string as argument, with leading | |
120 | and trailing blanks already eliminated. | |
121 | ||
122 | DOC is a documentation string for the command. | |
123 | Its first line should be a complete sentence. | |
124 | It should start with ? for a command that is an abbreviation | |
125 | or with * for a command that most users don't need to know about. | |
126 | ||
127 | Add this command to command list *LIST. | |
128 | ||
129 | Returns a pointer to the added command (not necessarily the head | |
130 | of *LIST). */ | |
131 | ||
132 | struct cmd_list_element * | |
af1c1752 KB |
133 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
134 | char *doc, struct cmd_list_element **list) | |
c906108c SS |
135 | { |
136 | register struct cmd_list_element *c | |
c5aa993b | 137 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
138 | struct cmd_list_element *p; |
139 | ||
140 | delete_cmd (name, list); | |
141 | ||
494b7ec9 | 142 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
143 | { |
144 | c->next = *list; | |
145 | *list = c; | |
146 | } | |
147 | else | |
148 | { | |
149 | p = *list; | |
494b7ec9 | 150 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
151 | { |
152 | p = p->next; | |
153 | } | |
c906108c SS |
154 | c->next = p->next; |
155 | p->next = c; | |
156 | } | |
157 | ||
158 | c->name = name; | |
159 | c->class = class; | |
9f60d481 | 160 | set_cmd_cfunc (c, fun); |
7d0766f3 | 161 | set_cmd_context (c, NULL); |
c906108c | 162 | c->doc = doc; |
56382845 FN |
163 | c->flags = 0; |
164 | c->replacement = NULL; | |
47724592 | 165 | c->pre_show_hook = NULL; |
73bc900d FN |
166 | c->hook_pre = NULL; |
167 | c->hook_post = NULL; | |
168 | c->hook_in = 0; | |
c906108c SS |
169 | c->prefixlist = NULL; |
170 | c->prefixname = NULL; | |
171 | c->allow_unknown = 0; | |
172 | c->abbrev_flag = 0; | |
5ba2abeb | 173 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
174 | c->type = not_set_cmd; |
175 | c->var = NULL; | |
176 | c->var_type = var_boolean; | |
177 | c->enums = NULL; | |
178 | c->user_commands = NULL; | |
73bc900d FN |
179 | c->hookee_pre = NULL; |
180 | c->hookee_post = NULL; | |
c906108c SS |
181 | c->cmd_pointer = NULL; |
182 | ||
183 | return c; | |
184 | } | |
185 | ||
56382845 FN |
186 | /* Deprecates a command CMD. |
187 | REPLACEMENT is the name of the command which should be used in place | |
188 | of this command, or NULL if no such command exists. | |
189 | ||
190 | This function does not check to see if command REPLACEMENT exists | |
191 | since gdb may not have gotten around to adding REPLACEMENT when this | |
192 | function is called. | |
193 | ||
194 | Returns a pointer to the deprecated command. */ | |
195 | ||
196 | struct cmd_list_element * | |
fba45db2 | 197 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
198 | { |
199 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
200 | ||
201 | if (replacement != NULL) | |
202 | cmd->replacement = replacement; | |
203 | else | |
204 | cmd->replacement = NULL; | |
205 | ||
206 | return cmd; | |
207 | } | |
208 | ||
c906108c | 209 | struct cmd_list_element * |
fba45db2 KB |
210 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
211 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
212 | { |
213 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
214 | char *copied_name; | |
215 | register struct cmd_list_element *old; | |
216 | register struct cmd_list_element *c; | |
217 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
218 | strcpy (copied_name, oldname); | |
c5aa993b | 219 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
220 | |
221 | if (old == 0) | |
222 | { | |
223 | delete_cmd (name, list); | |
224 | return 0; | |
225 | } | |
226 | ||
9f60d481 AC |
227 | c = add_cmd (name, class, NULL, old->doc, list); |
228 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
229 | c->func = old->func; | |
230 | c->function = old->function; | |
c906108c SS |
231 | c->prefixlist = old->prefixlist; |
232 | c->prefixname = old->prefixname; | |
233 | c->allow_unknown = old->allow_unknown; | |
234 | c->abbrev_flag = abbrev_flag; | |
235 | c->cmd_pointer = old; | |
236 | return c; | |
237 | } | |
238 | ||
239 | /* Like add_cmd but adds an element for a command prefix: | |
240 | a name that should be followed by a subcommand to be looked up | |
241 | in another command list. PREFIXLIST should be the address | |
242 | of the variable containing that list. */ | |
243 | ||
244 | struct cmd_list_element * | |
af1c1752 KB |
245 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
246 | char *doc, struct cmd_list_element **prefixlist, | |
247 | char *prefixname, int allow_unknown, | |
248 | struct cmd_list_element **list) | |
c906108c SS |
249 | { |
250 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
251 | c->prefixlist = prefixlist; | |
252 | c->prefixname = prefixname; | |
253 | c->allow_unknown = allow_unknown; | |
254 | return c; | |
255 | } | |
256 | ||
257 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 258 | |
c906108c | 259 | struct cmd_list_element * |
af1c1752 KB |
260 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
261 | void (*fun) (char *, int), char *doc, | |
262 | struct cmd_list_element **prefixlist, char *prefixname, | |
263 | int allow_unknown, struct cmd_list_element **list) | |
c906108c SS |
264 | { |
265 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
266 | c->prefixlist = prefixlist; | |
267 | c->prefixname = prefixname; | |
268 | c->allow_unknown = allow_unknown; | |
269 | c->abbrev_flag = 1; | |
270 | return c; | |
271 | } | |
272 | ||
273 | /* This is an empty "cfunc". */ | |
274 | void | |
fba45db2 | 275 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
276 | { |
277 | } | |
278 | ||
279 | /* This is an empty "sfunc". */ | |
a14ed312 | 280 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
281 | |
282 | static void | |
fba45db2 | 283 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
284 | { |
285 | } | |
286 | ||
b2875cc0 | 287 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 288 | or some sublist thereof). |
b2875cc0 | 289 | TYPE is set_cmd or show_cmd. |
c906108c SS |
290 | CLASS is as in add_cmd. |
291 | VAR_TYPE is the kind of thing we are setting. | |
292 | VAR is address of the variable being controlled by this command. | |
293 | DOC is the documentation string. */ | |
294 | ||
b2875cc0 AC |
295 | static struct cmd_list_element * |
296 | add_set_or_show_cmd (char *name, | |
297 | enum cmd_types type, | |
298 | enum command_class class, | |
299 | var_types var_type, | |
300 | void *var, | |
301 | char *doc, | |
302 | struct cmd_list_element **list) | |
c906108c | 303 | { |
e00d1dc8 | 304 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
305 | gdb_assert (type == set_cmd || type == show_cmd); |
306 | c->type = type; | |
c906108c SS |
307 | c->var_type = var_type; |
308 | c->var = var; | |
e00d1dc8 | 309 | /* This needs to be something besides NULL so that this isn't |
c906108c | 310 | treated as a help class. */ |
9f60d481 | 311 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
312 | return c; |
313 | } | |
314 | ||
e707bbc2 AC |
315 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
316 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
317 | setting. VAR is address of the variable being controlled by this | |
318 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
9f064c95 TT |
319 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. |
320 | SET_RESULT and SHOW_RESULT, if not NULL, are set to the resulting | |
321 | command structures. */ | |
e707bbc2 | 322 | |
9f064c95 TT |
323 | void |
324 | add_setshow_cmd_full (char *name, | |
325 | enum command_class class, | |
326 | var_types var_type, void *var, | |
327 | char *set_doc, char *show_doc, | |
328 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
329 | struct cmd_list_element **set_list, | |
330 | struct cmd_list_element **show_list, | |
331 | struct cmd_list_element **set_result, | |
332 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
333 | { |
334 | struct cmd_list_element *set; | |
335 | struct cmd_list_element *show; | |
336 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, | |
337 | set_doc, set_list); | |
338 | if (set_func != NULL) | |
339 | set_cmd_sfunc (set, set_func); | |
340 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
341 | show_doc, show_list); | |
342 | if (show_func != NULL) | |
343 | set_cmd_sfunc (show, show_func); | |
9f064c95 TT |
344 | |
345 | if (set_result != NULL) | |
346 | *set_result = set; | |
347 | if (show_result != NULL) | |
348 | *show_result = show; | |
349 | } | |
350 | ||
351 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. | |
352 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
353 | setting. VAR is address of the variable being controlled by this | |
354 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
355 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. */ | |
356 | ||
357 | void | |
358 | add_setshow_cmd (char *name, | |
359 | enum command_class class, | |
360 | var_types var_type, void *var, | |
361 | char *set_doc, char *show_doc, | |
362 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
363 | struct cmd_list_element **set_list, | |
364 | struct cmd_list_element **show_list) | |
365 | { | |
366 | add_setshow_cmd_full (name, class, var_type, var, set_doc, show_doc, | |
367 | set_func, show_func, set_list, show_list, | |
368 | NULL, NULL); | |
e707bbc2 | 369 | } |
b2875cc0 AC |
370 | |
371 | struct cmd_list_element * | |
372 | add_set_cmd (char *name, | |
373 | enum command_class class, | |
374 | var_types var_type, | |
375 | void *var, | |
376 | char *doc, | |
377 | struct cmd_list_element **list) | |
378 | { | |
379 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
380 | } | |
381 | ||
c906108c SS |
382 | /* Add element named NAME to command list LIST (the list for set |
383 | or some sublist thereof). | |
384 | CLASS is as in add_cmd. | |
385 | ENUMLIST is a list of strings which may follow NAME. | |
386 | VAR is address of the variable which will contain the matching string | |
c5aa993b | 387 | (from ENUMLIST). |
c906108c SS |
388 | DOC is the documentation string. */ |
389 | ||
390 | struct cmd_list_element * | |
1ed2a135 AC |
391 | add_set_enum_cmd (char *name, |
392 | enum command_class class, | |
53904c9e AC |
393 | const char *enumlist[], |
394 | const char **var, | |
1ed2a135 AC |
395 | char *doc, |
396 | struct cmd_list_element **list) | |
c906108c SS |
397 | { |
398 | struct cmd_list_element *c | |
c5aa993b | 399 | = add_set_cmd (name, class, var_enum, var, doc, list); |
c906108c SS |
400 | c->enums = enumlist; |
401 | ||
402 | return c; | |
403 | } | |
404 | ||
e9e68a56 AC |
405 | /* Add an auto-boolean command named NAME to both the set and show |
406 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
407 | variable which will contain the value. DOC is the documentation | |
408 | string. FUNC is the corresponding callback. */ | |
409 | void | |
410 | add_setshow_auto_boolean_cmd (char *name, | |
411 | enum command_class class, | |
412 | enum auto_boolean *var, | |
413 | char *set_doc, char *show_doc, | |
414 | cmd_sfunc_ftype *set_func, | |
415 | cmd_sfunc_ftype *show_func, | |
416 | struct cmd_list_element **set_list, | |
417 | struct cmd_list_element **show_list) | |
97c3646f AC |
418 | { |
419 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
420 | struct cmd_list_element *c; | |
9f064c95 TT |
421 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
422 | set_doc, show_doc, set_func, show_func, | |
423 | set_list, show_list, | |
424 | &c, NULL); | |
97c3646f | 425 | c->enums = auto_boolean_enums; |
97c3646f AC |
426 | } |
427 | ||
e707bbc2 AC |
428 | /* Add element named NAME to both the set and show command LISTs (the |
429 | list for set/show or some sublist thereof). CLASS is as in | |
430 | add_cmd. VAR is address of the variable which will contain the | |
431 | value. SET_DOC and SHOW_DOR are the documentation strings. */ | |
432 | void | |
433 | add_setshow_boolean_cmd (char *name, | |
434 | enum command_class class, | |
435 | int *var, char *set_doc, char *show_doc, | |
436 | cmd_sfunc_ftype *set_func, | |
437 | cmd_sfunc_ftype *show_func, | |
438 | struct cmd_list_element **set_list, | |
439 | struct cmd_list_element **show_list) | |
f3796e26 AC |
440 | { |
441 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
442 | struct cmd_list_element *c; | |
9f064c95 TT |
443 | add_setshow_cmd_full (name, class, var_boolean, var, |
444 | set_doc, show_doc, | |
445 | set_func, show_func, | |
446 | set_list, show_list, | |
447 | &c, NULL); | |
f3796e26 | 448 | c->enums = boolean_enums; |
f3796e26 AC |
449 | } |
450 | ||
c906108c | 451 | /* Where SETCMD has already been added, add the corresponding show |
b2875cc0 | 452 | command to LIST and return a pointer to the added command (not |
c906108c | 453 | necessarily the head of LIST). */ |
b2875cc0 | 454 | /* NOTE: cagney/2002-03-17: The original version of add_show_from_set |
c0e624e7 | 455 | used memcpy() to clone `set' into `show'. This meant that in |
b2875cc0 AC |
456 | addition to all the needed fields (var, name, et.al.) some |
457 | unnecessary fields were copied (namely the callback function). The | |
458 | function explictly copies relevant fields. For a `set' and `show' | |
459 | command to share the same callback, the caller must set both | |
460 | explicitly. */ | |
c906108c | 461 | struct cmd_list_element * |
fba45db2 KB |
462 | add_show_from_set (struct cmd_list_element *setcmd, |
463 | struct cmd_list_element **list) | |
c906108c | 464 | { |
b2875cc0 AC |
465 | char *doc; |
466 | const static char setstring[] = "Set "; | |
c5aa993b | 467 | |
b2875cc0 AC |
468 | /* Create a doc string by replacing "Set " at the start of the |
469 | `set'' command's doco with "Show ". */ | |
470 | gdb_assert (strncmp (setcmd->doc, setstring, sizeof (setstring) - 1) == 0); | |
471 | doc = concat ("Show ", setcmd->doc + sizeof (setstring) - 1, NULL); | |
c906108c | 472 | |
b2875cc0 AC |
473 | /* Insert the basic command. */ |
474 | return add_set_or_show_cmd (setcmd->name, show_cmd, setcmd->class, | |
475 | setcmd->var_type, setcmd->var, doc, list); | |
c906108c SS |
476 | } |
477 | ||
478 | /* Remove the command named NAME from the command list. */ | |
479 | ||
480 | void | |
fba45db2 | 481 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c SS |
482 | { |
483 | register struct cmd_list_element *c; | |
484 | struct cmd_list_element *p; | |
485 | ||
486 | while (*list && STREQ ((*list)->name, name)) | |
487 | { | |
73bc900d FN |
488 | if ((*list)->hookee_pre) |
489 | (*list)->hookee_pre->hook_pre = 0; /* Hook slips out of its mouth */ | |
490 | if ((*list)->hookee_post) | |
491 | (*list)->hookee_post->hook_post = 0; /* Hook slips out of its bottom */ | |
c906108c | 492 | p = (*list)->next; |
b8c9b27d | 493 | xfree (* list); |
c906108c SS |
494 | *list = p; |
495 | } | |
496 | ||
497 | if (*list) | |
498 | for (c = *list; c->next;) | |
499 | { | |
500 | if (STREQ (c->next->name, name)) | |
501 | { | |
73bc900d FN |
502 | if (c->next->hookee_pre) |
503 | c->next->hookee_pre->hook_pre = 0; /* hooked cmd gets away. */ | |
504 | if (c->next->hookee_post) | |
505 | c->next->hookee_post->hook_post = 0; /* remove post hook */ | |
506 | /* :( no fishing metaphore */ | |
c906108c | 507 | p = c->next->next; |
b8c9b27d | 508 | xfree (c->next); |
c906108c SS |
509 | c->next = p; |
510 | } | |
511 | else | |
512 | c = c->next; | |
513 | } | |
514 | } | |
d318976c FN |
515 | \f |
516 | /* Shorthands to the commands above. */ | |
517 | ||
518 | /* Add an element to the list of info subcommands. */ | |
519 | ||
520 | struct cmd_list_element * | |
521 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
522 | { | |
523 | return add_cmd (name, no_class, fun, doc, &infolist); | |
524 | } | |
525 | ||
526 | /* Add an alias to the list of info subcommands. */ | |
527 | ||
528 | struct cmd_list_element * | |
529 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
530 | { | |
531 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
532 | } | |
533 | ||
534 | /* Add an element to the list of commands. */ | |
535 | ||
536 | struct cmd_list_element * | |
537 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
538 | char *doc) | |
539 | { | |
540 | return add_cmd (name, class, fun, doc, &cmdlist); | |
541 | } | |
542 | ||
543 | /* Add an alias or abbreviation command to the list of commands. */ | |
544 | ||
545 | struct cmd_list_element * | |
546 | add_com_alias (char *name, char *oldname, enum command_class class, | |
547 | int abbrev_flag) | |
548 | { | |
549 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
550 | } | |
551 | \f | |
6837a0a2 DB |
552 | /* Recursively walk the commandlist structures, and print out the |
553 | documentation of commands that match our regex in either their | |
554 | name, or their documentation. | |
555 | */ | |
d318976c FN |
556 | void |
557 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
558 | struct re_pattern_buffer *regex, char *prefix) |
559 | { | |
560 | register struct cmd_list_element *c; | |
561 | int returnvalue=1; /*Needed to avoid double printing*/ | |
562 | /* Walk through the commands */ | |
563 | for (c=commandlist;c;c=c->next) | |
564 | { | |
565 | if (c->name != NULL) | |
566 | { | |
567 | /* Try to match against the name*/ | |
568 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
569 | if (returnvalue >= 0) | |
570 | { | |
571 | /* Stolen from help_cmd_list. We don't directly use | |
572 | * help_cmd_list because it doesn't let us print out | |
573 | * single commands | |
574 | */ | |
575 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
576 | print_doc_line (stream, c->doc); | |
577 | fputs_filtered ("\n", stream); | |
578 | returnvalue=0; /*Set this so we don't print it again.*/ | |
579 | } | |
580 | } | |
581 | if (c->doc != NULL && returnvalue != 0) | |
582 | { | |
583 | /* Try to match against documentation */ | |
584 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
585 | { | |
586 | /* Stolen from help_cmd_list. We don't directly use | |
587 | * help_cmd_list because it doesn't let us print out | |
588 | * single commands | |
589 | */ | |
590 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
591 | print_doc_line (stream, c->doc); | |
592 | fputs_filtered ("\n", stream); | |
593 | } | |
594 | } | |
595 | /* Check if this command has subcommands */ | |
596 | if (c->prefixlist != NULL) | |
597 | { | |
598 | /* Recursively call ourselves on the subcommand list, | |
599 | passing the right prefix in. | |
600 | */ | |
d318976c | 601 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
602 | } |
603 | } | |
604 | } | |
c906108c SS |
605 | |
606 | /* This command really has to deal with two things: | |
607 | * 1) I want documentation on *this string* (usually called by | |
608 | * "help commandname"). | |
609 | * 2) I want documentation on *this list* (usually called by | |
610 | * giving a command that requires subcommands. Also called by saying | |
611 | * just "help".) | |
612 | * | |
613 | * I am going to split this into two seperate comamnds, help_cmd and | |
614 | * help_list. | |
615 | */ | |
616 | ||
617 | void | |
fba45db2 | 618 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
619 | { |
620 | struct cmd_list_element *c; | |
621 | extern struct cmd_list_element *cmdlist; | |
622 | ||
623 | if (!command) | |
624 | { | |
625 | help_list (cmdlist, "", all_classes, stream); | |
626 | return; | |
627 | } | |
628 | ||
49a5a3a3 GM |
629 | if (strcmp (command, "all") == 0) |
630 | { | |
631 | help_all (stream); | |
632 | return; | |
633 | } | |
634 | ||
c906108c SS |
635 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
636 | ||
637 | if (c == 0) | |
638 | return; | |
639 | ||
640 | /* There are three cases here. | |
641 | If c->prefixlist is nonzero, we have a prefix command. | |
642 | Print its documentation, then list its subcommands. | |
c5aa993b | 643 | |
9f60d481 AC |
644 | If c->func is non NULL, we really have a command. Print its |
645 | documentation and return. | |
c5aa993b | 646 | |
9f60d481 AC |
647 | If c->func is NULL, we have a class name. Print its |
648 | documentation (as if it were a command) and then set class to the | |
649 | number of this class so that the commands in the class will be | |
650 | listed. */ | |
c906108c SS |
651 | |
652 | fputs_filtered (c->doc, stream); | |
653 | fputs_filtered ("\n", stream); | |
654 | ||
9f60d481 | 655 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
656 | return; |
657 | fprintf_filtered (stream, "\n"); | |
658 | ||
659 | /* If this is a prefix command, print it's subcommands */ | |
660 | if (c->prefixlist) | |
661 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
662 | ||
663 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 664 | if (c->func == NULL) |
c906108c SS |
665 | help_list (cmdlist, "", c->class, stream); |
666 | ||
73bc900d FN |
667 | if (c->hook_pre || c->hook_post) |
668 | fprintf_filtered (stream, | |
669 | "\nThis command has a hook (or hooks) defined:\n"); | |
670 | ||
671 | if (c->hook_pre) | |
672 | fprintf_filtered (stream, | |
673 | "\tThis command is run after : %s (pre hook)\n", | |
674 | c->hook_pre->name); | |
675 | if (c->hook_post) | |
676 | fprintf_filtered (stream, | |
677 | "\tThis command is run before : %s (post hook)\n", | |
678 | c->hook_post->name); | |
c906108c SS |
679 | } |
680 | ||
681 | /* | |
682 | * Get a specific kind of help on a command list. | |
683 | * | |
684 | * LIST is the list. | |
685 | * CMDTYPE is the prefix to use in the title string. | |
686 | * CLASS is the class with which to list the nodes of this list (see | |
687 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
688 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
689 | * in a specific class. | |
690 | * and STREAM is the output stream on which to print things. | |
691 | * If you call this routine with a class >= 0, it recurses. | |
692 | */ | |
693 | void | |
fba45db2 KB |
694 | help_list (struct cmd_list_element *list, char *cmdtype, |
695 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
696 | { |
697 | int len; | |
698 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 699 | |
c906108c SS |
700 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
701 | len = strlen (cmdtype); | |
702 | cmdtype1 = (char *) alloca (len + 1); | |
703 | cmdtype1[0] = 0; | |
704 | cmdtype2 = (char *) alloca (len + 4); | |
705 | cmdtype2[0] = 0; | |
706 | if (len) | |
707 | { | |
708 | cmdtype1[0] = ' '; | |
709 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
710 | cmdtype1[len] = 0; | |
711 | strncpy (cmdtype2, cmdtype, len - 1); | |
712 | strcpy (cmdtype2 + len - 1, " sub"); | |
713 | } | |
714 | ||
715 | if (class == all_classes) | |
716 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
717 | else | |
718 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
719 | ||
c5aa993b | 720 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
721 | |
722 | if (class == all_classes) | |
de74f71f MS |
723 | { |
724 | fprintf_filtered (stream, "\n\ | |
725 | Type \"help%s\" followed by a class name for a list of commands in ", | |
726 | cmdtype1); | |
727 | wrap_here (""); | |
728 | fprintf_filtered (stream, "that class."); | |
729 | } | |
c906108c | 730 | |
de74f71f | 731 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 732 | cmdtype1, cmdtype2); |
de74f71f MS |
733 | wrap_here (""); |
734 | fputs_filtered ("for ", stream); | |
735 | wrap_here (""); | |
736 | fputs_filtered ("full ", stream); | |
737 | wrap_here (""); | |
738 | fputs_filtered ("documentation.\n", stream); | |
739 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", | |
740 | stream); | |
c906108c | 741 | } |
c5aa993b | 742 | |
49a5a3a3 | 743 | static void |
c85871a3 | 744 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
745 | { |
746 | struct cmd_list_element *c; | |
747 | extern struct cmd_list_element *cmdlist; | |
748 | ||
749 | for (c = cmdlist; c; c = c->next) | |
750 | { | |
751 | if (c->abbrev_flag) | |
752 | continue; | |
753 | /* If this is a prefix command, print it's subcommands */ | |
754 | if (c->prefixlist) | |
755 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream); | |
756 | ||
757 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 758 | else if (c->func == NULL) |
49a5a3a3 GM |
759 | help_cmd_list (cmdlist, c->class, "", 0, stream); |
760 | } | |
761 | } | |
762 | ||
c906108c | 763 | /* Print only the first line of STR on STREAM. */ |
d318976c | 764 | void |
fba45db2 | 765 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
766 | { |
767 | static char *line_buffer = 0; | |
768 | static int line_size; | |
769 | register char *p; | |
770 | ||
771 | if (!line_buffer) | |
772 | { | |
773 | line_size = 80; | |
774 | line_buffer = (char *) xmalloc (line_size); | |
775 | } | |
776 | ||
777 | p = str; | |
778 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
779 | p++; | |
780 | if (p - str > line_size - 1) | |
781 | { | |
782 | line_size = p - str + 1; | |
b8c9b27d | 783 | xfree (line_buffer); |
c906108c SS |
784 | line_buffer = (char *) xmalloc (line_size); |
785 | } | |
786 | strncpy (line_buffer, str, p - str); | |
787 | line_buffer[p - str] = '\0'; | |
788 | if (islower (line_buffer[0])) | |
789 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 790 | ui_out_text (uiout, line_buffer); |
c906108c SS |
791 | } |
792 | ||
793 | /* | |
794 | * Implement a help command on command list LIST. | |
795 | * RECURSE should be non-zero if this should be done recursively on | |
796 | * all sublists of LIST. | |
797 | * PREFIX is the prefix to print before each command name. | |
798 | * STREAM is the stream upon which the output should be written. | |
799 | * CLASS should be: | |
c5aa993b | 800 | * A non-negative class number to list only commands in that |
c906108c | 801 | * class. |
c5aa993b JM |
802 | * ALL_COMMANDS to list all commands in list. |
803 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
804 | * |
805 | * Note that RECURSE will be active on *all* sublists, not just the | |
806 | * ones selected by the criteria above (ie. the selection mechanism | |
807 | * is at the low level, not the high-level). | |
808 | */ | |
809 | void | |
fba45db2 KB |
810 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
811 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c SS |
812 | { |
813 | register struct cmd_list_element *c; | |
814 | ||
815 | for (c = list; c; c = c->next) | |
816 | { | |
817 | if (c->abbrev_flag == 0 && | |
818 | (class == all_commands | |
9f60d481 AC |
819 | || (class == all_classes && c->func == NULL) |
820 | || (class == c->class && c->func != NULL))) | |
c906108c SS |
821 | { |
822 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
823 | print_doc_line (stream, c->doc); | |
824 | fputs_filtered ("\n", stream); | |
825 | } | |
826 | if (recurse | |
827 | && c->prefixlist != 0 | |
828 | && c->abbrev_flag == 0) | |
829 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
830 | } | |
831 | } | |
c906108c | 832 | \f |
c5aa993b | 833 | |
c906108c SS |
834 | /* Search the input clist for 'command'. Return the command if |
835 | found (or NULL if not), and return the number of commands | |
836 | found in nfound */ | |
837 | ||
838 | static struct cmd_list_element * | |
fba45db2 KB |
839 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
840 | int ignore_help_classes, int *nfound) | |
c906108c SS |
841 | { |
842 | struct cmd_list_element *found, *c; | |
843 | ||
c5aa993b | 844 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
845 | *nfound = 0; |
846 | for (c = clist; c; c = c->next) | |
847 | if (!strncmp (command, c->name, len) | |
9f60d481 | 848 | && (!ignore_help_classes || c->func)) |
c906108c | 849 | { |
c5aa993b JM |
850 | found = c; |
851 | (*nfound)++; | |
852 | if (c->name[len] == '\0') | |
853 | { | |
854 | *nfound = 1; | |
855 | break; | |
856 | } | |
c906108c SS |
857 | } |
858 | return found; | |
859 | } | |
860 | ||
861 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
862 | lookup. When it returns it will have incremented the text pointer past | |
863 | the section of text it matched, set *RESULT_LIST to point to the list in | |
864 | which the last word was matched, and will return a pointer to the cmd | |
865 | list element which the text matches. It will return NULL if no match at | |
866 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
867 | matches are possible; in this case *RESULT_LIST will be set to point to | |
868 | the list in which there are ambiguous choices (and *TEXT will be set to | |
869 | the ambiguous text string). | |
870 | ||
871 | If the located command was an abbreviation, this routine returns the base | |
872 | command of the abbreviation. | |
873 | ||
874 | It does no error reporting whatsoever; control will always return | |
875 | to the superior routine. | |
876 | ||
877 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
878 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
879 | if no prefix command was ever found. For example, in the case of "info a", | |
880 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
881 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
882 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
883 | list; it simply points to a specific command. In the case of an ambiguous | |
884 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
885 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
886 | advanced past "info "). | |
887 | ||
888 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
889 | affect the operation). | |
890 | ||
891 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 892 | |
c906108c SS |
893 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
894 | are actually help classes rather than commands (i.e. the function field of | |
895 | the struct cmd_list_element is NULL). */ | |
896 | ||
897 | struct cmd_list_element * | |
fba45db2 KB |
898 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
899 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c SS |
900 | { |
901 | char *p, *command; | |
902 | int len, tmp, nfound; | |
903 | struct cmd_list_element *found, *c; | |
56382845 | 904 | char *line = *text; |
c906108c SS |
905 | |
906 | while (**text == ' ' || **text == '\t') | |
907 | (*text)++; | |
908 | ||
909 | /* Treating underscores as part of command words is important | |
910 | so that "set args_foo()" doesn't get interpreted as | |
911 | "set args _foo()". */ | |
021e7609 AC |
912 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
913 | `tui_version'. */ | |
c906108c | 914 | for (p = *text; |
c5aa993b | 915 | *p && (isalnum (*p) || *p == '-' || *p == '_' || |
3b27aeea | 916 | #if defined(TUI) |
021e7609 | 917 | (tui_active && |
c906108c | 918 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || |
3b27aeea | 919 | #endif |
c906108c SS |
920 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); |
921 | p++) | |
922 | ; | |
923 | ||
924 | /* If nothing but whitespace, return 0. */ | |
925 | if (p == *text) | |
926 | return 0; | |
c5aa993b | 927 | |
c906108c SS |
928 | len = p - *text; |
929 | ||
930 | /* *text and p now bracket the first command word to lookup (and | |
931 | it's length is len). We copy this into a local temporary */ | |
932 | ||
933 | ||
934 | command = (char *) alloca (len + 1); | |
935 | for (tmp = 0; tmp < len; tmp++) | |
936 | { | |
937 | char x = (*text)[tmp]; | |
938 | command[tmp] = x; | |
939 | } | |
940 | command[len] = '\0'; | |
941 | ||
942 | /* Look it up. */ | |
943 | found = 0; | |
944 | nfound = 0; | |
c5aa993b | 945 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
946 | |
947 | /* | |
c5aa993b JM |
948 | ** We didn't find the command in the entered case, so lower case it |
949 | ** and search again. | |
950 | */ | |
c906108c SS |
951 | if (!found || nfound == 0) |
952 | { | |
953 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
954 | { |
955 | char x = command[tmp]; | |
956 | command[tmp] = isupper (x) ? tolower (x) : x; | |
957 | } | |
958 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
959 | } |
960 | ||
961 | /* If nothing matches, we have a simple failure. */ | |
962 | if (nfound == 0) | |
963 | return 0; | |
964 | ||
965 | if (nfound > 1) | |
966 | { | |
967 | if (result_list != NULL) | |
968 | /* Will be modified in calling routine | |
969 | if we know what the prefix command is. */ | |
c5aa993b JM |
970 | *result_list = 0; |
971 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
972 | } |
973 | ||
974 | /* We've matched something on this list. Move text pointer forward. */ | |
975 | ||
976 | *text = p; | |
977 | ||
c906108c | 978 | if (found->cmd_pointer) |
56382845 FN |
979 | { |
980 | /* We drop the alias (abbreviation) in favor of the command it is | |
981 | pointing to. If the alias is deprecated, though, we need to | |
982 | warn the user about it before we drop it. Note that while we | |
983 | are warning about the alias, we may also warn about the command | |
984 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
985 | flags */ | |
986 | ||
987 | if (found->flags & DEPRECATED_WARN_USER) | |
988 | deprecated_cmd_warning (&line); | |
989 | found = found->cmd_pointer; | |
990 | } | |
c906108c SS |
991 | /* If we found a prefix command, keep looking. */ |
992 | ||
993 | if (found->prefixlist) | |
994 | { | |
995 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
996 | ignore_help_classes); | |
997 | if (!c) | |
998 | { | |
999 | /* Didn't find anything; this is as far as we got. */ | |
1000 | if (result_list != NULL) | |
1001 | *result_list = clist; | |
1002 | return found; | |
1003 | } | |
1004 | else if (c == (struct cmd_list_element *) -1) | |
1005 | { | |
1006 | /* We've gotten this far properly, but the next step | |
1007 | is ambiguous. We need to set the result list to the best | |
1008 | we've found (if an inferior hasn't already set it). */ | |
1009 | if (result_list != NULL) | |
1010 | if (!*result_list) | |
1011 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1012 | If that was correct, need to modify the documentation |
1013 | at the top of this function to clarify what is supposed | |
1014 | to be going on. */ | |
c906108c SS |
1015 | *result_list = found; |
1016 | return c; | |
1017 | } | |
1018 | else | |
1019 | { | |
1020 | /* We matched! */ | |
1021 | return c; | |
1022 | } | |
1023 | } | |
1024 | else | |
1025 | { | |
1026 | if (result_list != NULL) | |
1027 | *result_list = clist; | |
1028 | return found; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | /* All this hair to move the space to the front of cmdtype */ | |
1033 | ||
1034 | static void | |
fba45db2 | 1035 | undef_cmd_error (char *cmdtype, char *q) |
c906108c SS |
1036 | { |
1037 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
c5aa993b JM |
1038 | cmdtype, |
1039 | q, | |
1040 | *cmdtype ? " " : "", | |
823ca731 | 1041 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1042 | cmdtype); |
c906108c SS |
1043 | } |
1044 | ||
1045 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1046 | LIST is a chain of struct cmd_list_element's. | |
1047 | If it is found, return the struct cmd_list_element for that command | |
1048 | and update *LINE to point after the command name, at the first argument. | |
1049 | If not found, call error if ALLOW_UNKNOWN is zero | |
1050 | otherwise (or if error returns) return zero. | |
1051 | Call error if specified command is ambiguous, | |
1052 | unless ALLOW_UNKNOWN is negative. | |
1053 | CMDTYPE precedes the word "command" in the error message. | |
1054 | ||
1055 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1056 | elements which are actually help classes rather than commands (i.e. | |
1057 | the function field of the struct cmd_list_element is 0). */ | |
1058 | ||
1059 | struct cmd_list_element * | |
fba45db2 KB |
1060 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1061 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1062 | { |
1063 | struct cmd_list_element *last_list = 0; | |
1064 | struct cmd_list_element *c = | |
c5aa993b | 1065 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); |
c64601c7 FN |
1066 | |
1067 | /* Note: Do not remove trailing whitespace here because this | |
1068 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1069 | |
c906108c SS |
1070 | if (!c) |
1071 | { | |
1072 | if (!allow_unknown) | |
1073 | { | |
1074 | if (!*line) | |
1075 | error ("Lack of needed %scommand", cmdtype); | |
1076 | else | |
1077 | { | |
1078 | char *p = *line, *q; | |
1079 | ||
c5aa993b | 1080 | while (isalnum (*p) || *p == '-') |
c906108c SS |
1081 | p++; |
1082 | ||
1083 | q = (char *) alloca (p - *line + 1); | |
1084 | strncpy (q, *line, p - *line); | |
1085 | q[p - *line] = '\0'; | |
1086 | undef_cmd_error (cmdtype, q); | |
1087 | } | |
1088 | } | |
1089 | else | |
1090 | return 0; | |
1091 | } | |
1092 | else if (c == (struct cmd_list_element *) -1) | |
1093 | { | |
1094 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1095 | values. */ |
c906108c SS |
1096 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1097 | allow_unknown); | |
1098 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1099 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1100 | (last_list ? *(last_list->prefixlist) : list); |
1101 | ||
c906108c SS |
1102 | if (local_allow_unknown < 0) |
1103 | { | |
1104 | if (last_list) | |
1105 | return last_list; /* Found something. */ | |
1106 | else | |
1107 | return 0; /* Found nothing. */ | |
1108 | } | |
1109 | else | |
1110 | { | |
1111 | /* Report as error. */ | |
1112 | int amb_len; | |
1113 | char ambbuf[100]; | |
1114 | ||
1115 | for (amb_len = 0; | |
1116 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1117 | && (*line)[amb_len] != '\t'); | |
1118 | amb_len++) | |
1119 | ; | |
c5aa993b | 1120 | |
c906108c SS |
1121 | ambbuf[0] = 0; |
1122 | for (c = local_list; c; c = c->next) | |
1123 | if (!strncmp (*line, c->name, amb_len)) | |
1124 | { | |
c5aa993b | 1125 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1126 | { |
1127 | if (strlen (ambbuf)) | |
1128 | strcat (ambbuf, ", "); | |
1129 | strcat (ambbuf, c->name); | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | strcat (ambbuf, ".."); | |
1134 | break; | |
1135 | } | |
1136 | } | |
1137 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
1138 | *line, ambbuf); | |
1139 | return 0; /* lint */ | |
1140 | } | |
1141 | } | |
1142 | else | |
1143 | { | |
1144 | /* We've got something. It may still not be what the caller | |
1145 | wants (if this command *needs* a subcommand). */ | |
1146 | while (**line == ' ' || **line == '\t') | |
1147 | (*line)++; | |
1148 | ||
1149 | if (c->prefixlist && **line && !c->allow_unknown) | |
1150 | undef_cmd_error (c->prefixname, *line); | |
1151 | ||
1152 | /* Seems to be what he wants. Return it. */ | |
1153 | return c; | |
1154 | } | |
1155 | return 0; | |
1156 | } | |
c5aa993b | 1157 | |
56382845 FN |
1158 | /* We are here presumably because an alias or command in *TEXT is |
1159 | deprecated and a warning message should be generated. This function | |
1160 | decodes *TEXT and potentially generates a warning message as outlined | |
1161 | below. | |
1162 | ||
1163 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1164 | ||
1165 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1166 | "warning: 'set endian big' is deprecated." | |
1167 | ||
1168 | If alias was used, and only the alias is deprecated: | |
1169 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1170 | ||
1171 | If alias was used and command is deprecated (regardless of whether the | |
1172 | alias itself is deprecated: | |
1173 | ||
1174 | "warning: 'set endian big' (seb) is deprecated." | |
1175 | ||
1176 | After the message has been sent, clear the appropriate flags in the | |
1177 | command and/or the alias so the user is no longer bothered. | |
1178 | ||
1179 | */ | |
1180 | void | |
1181 | deprecated_cmd_warning (char **text) | |
1182 | { | |
1183 | struct cmd_list_element *alias = NULL; | |
1184 | struct cmd_list_element *prefix_cmd = NULL; | |
1185 | struct cmd_list_element *cmd = NULL; | |
1186 | struct cmd_list_element *c; | |
1187 | char *type; | |
1188 | ||
1189 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) | |
1190 | /* return if text doesn't evaluate to a command */ | |
1191 | return; | |
1192 | ||
1193 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1194 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1195 | /* return if nothing is deprecated */ | |
1196 | return; | |
1197 | ||
1198 | printf_filtered ("Warning:"); | |
1199 | ||
1200 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1201 | printf_filtered (" '%s', an alias for the", alias->name); | |
1202 | ||
1203 | printf_filtered (" command '"); | |
1204 | ||
1205 | if (prefix_cmd) | |
1206 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1207 | ||
1208 | printf_filtered ("%s", cmd->name); | |
1209 | ||
1210 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1211 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1212 | else | |
1213 | printf_filtered ("' is deprecated.\n"); | |
1214 | ||
1215 | ||
1216 | /* if it is only the alias that is deprecated, we want to indicate the | |
1217 | new alias, otherwise we'll indicate the new command */ | |
1218 | ||
1219 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1220 | { | |
1221 | if (alias->replacement) | |
1222 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1223 | else | |
1224 | printf_filtered ("No alternative known.\n\n"); | |
1225 | } | |
1226 | else | |
1227 | { | |
1228 | if (cmd->replacement) | |
1229 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1230 | else | |
1231 | printf_filtered ("No alternative known.\n\n"); | |
1232 | } | |
1233 | ||
1234 | /* We've warned you, now we'll keep quiet */ | |
1235 | if (alias) | |
1236 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1237 | ||
1238 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1239 | } | |
1240 | ||
1241 | ||
1242 | ||
1243 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1244 | Return 1 on success, 0 on failure. | |
1245 | ||
1246 | If LINE refers to an alias, *alias will point to that alias. | |
1247 | ||
1248 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1249 | command) set *prefix_cmd. | |
1250 | ||
1251 | Set *cmd to point to the command LINE indicates. | |
1252 | ||
1253 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1254 | exist, they are NULL when we return. | |
1255 | ||
1256 | */ | |
1257 | int | |
1258 | lookup_cmd_composition (char *text, | |
1259 | struct cmd_list_element **alias, | |
1260 | struct cmd_list_element **prefix_cmd, | |
1261 | struct cmd_list_element **cmd) | |
1262 | { | |
1263 | char *p, *command; | |
1264 | int len, tmp, nfound; | |
1265 | struct cmd_list_element *cur_list; | |
1266 | struct cmd_list_element *prev_cmd; | |
1267 | *alias = NULL; | |
1268 | *prefix_cmd = NULL; | |
1269 | *cmd = NULL; | |
1270 | ||
1271 | cur_list = cmdlist; | |
1272 | ||
1273 | while (1) | |
1274 | { | |
1275 | /* Go through as many command lists as we need to | |
1276 | to find the command TEXT refers to. */ | |
1277 | ||
1278 | prev_cmd = *cmd; | |
1279 | ||
1280 | while (*text == ' ' || *text == '\t') | |
1281 | (text)++; | |
1282 | ||
1283 | /* Treating underscores as part of command words is important | |
1284 | so that "set args_foo()" doesn't get interpreted as | |
1285 | "set args _foo()". */ | |
021e7609 AC |
1286 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1287 | `tui_version'. */ | |
56382845 FN |
1288 | for (p = text; |
1289 | *p && (isalnum (*p) || *p == '-' || *p == '_' || | |
3b27aeea | 1290 | #if defined(TUI) |
021e7609 | 1291 | (tui_active && |
56382845 | 1292 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || |
3b27aeea | 1293 | #endif |
56382845 FN |
1294 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); |
1295 | p++) | |
1296 | ; | |
1297 | ||
1298 | /* If nothing but whitespace, return. */ | |
1299 | if (p == text) | |
1300 | return 0; | |
1301 | ||
1302 | len = p - text; | |
1303 | ||
1304 | /* text and p now bracket the first command word to lookup (and | |
1305 | it's length is len). We copy this into a local temporary */ | |
1306 | ||
1307 | command = (char *) alloca (len + 1); | |
1308 | for (tmp = 0; tmp < len; tmp++) | |
1309 | { | |
1310 | char x = text[tmp]; | |
1311 | command[tmp] = x; | |
1312 | } | |
1313 | command[len] = '\0'; | |
1314 | ||
1315 | /* Look it up. */ | |
1316 | *cmd = 0; | |
1317 | nfound = 0; | |
1318 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1319 | ||
1320 | /* We didn't find the command in the entered case, so lower case it | |
1321 | and search again. | |
1322 | */ | |
1323 | if (!*cmd || nfound == 0) | |
1324 | { | |
1325 | for (tmp = 0; tmp < len; tmp++) | |
1326 | { | |
1327 | char x = command[tmp]; | |
1328 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1329 | } | |
1330 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1331 | } | |
1332 | ||
1333 | if (*cmd == (struct cmd_list_element *) -1) | |
1334 | { | |
1335 | return 0; /* ambiguous */ | |
1336 | } | |
1337 | ||
1338 | if (*cmd == NULL) | |
1339 | return 0; /* nothing found */ | |
1340 | else | |
1341 | { | |
1342 | if ((*cmd)->cmd_pointer) | |
1343 | { | |
1344 | /* cmd was actually an alias, we note that an alias was used | |
1345 | (by assigning *alais) and we set *cmd. | |
1346 | */ | |
1347 | *alias = *cmd; | |
1348 | *cmd = (*cmd)->cmd_pointer; | |
1349 | } | |
1350 | *prefix_cmd = prev_cmd; | |
1351 | } | |
1352 | if ((*cmd)->prefixlist) | |
1353 | cur_list = *(*cmd)->prefixlist; | |
1354 | else | |
1355 | return 1; | |
1356 | ||
1357 | text = p; | |
1358 | } | |
1359 | } | |
1360 | ||
c906108c SS |
1361 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1362 | ||
1363 | /* Return a vector of char pointers which point to the different | |
1364 | possible completions in LIST of TEXT. | |
1365 | ||
1366 | WORD points in the same buffer as TEXT, and completions should be | |
1367 | returned relative to this position. For example, suppose TEXT is "foo" | |
1368 | and we want to complete to "foobar". If WORD is "oo", return | |
1369 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1370 | ||
1371 | char ** | |
fba45db2 | 1372 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1373 | { |
1374 | struct cmd_list_element *ptr; | |
1375 | char **matchlist; | |
1376 | int sizeof_matchlist; | |
1377 | int matches; | |
1378 | int textlen = strlen (text); | |
1379 | ||
1380 | sizeof_matchlist = 10; | |
1381 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1382 | matches = 0; | |
1383 | ||
1384 | for (ptr = list; ptr; ptr = ptr->next) | |
1385 | if (!strncmp (ptr->name, text, textlen) | |
1386 | && !ptr->abbrev_flag | |
9f60d481 | 1387 | && (ptr->func |
c906108c SS |
1388 | || ptr->prefixlist)) |
1389 | { | |
1390 | if (matches == sizeof_matchlist) | |
1391 | { | |
1392 | sizeof_matchlist *= 2; | |
c5aa993b | 1393 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1394 | (sizeof_matchlist |
1395 | * sizeof (char *))); | |
1396 | } | |
1397 | ||
c5aa993b | 1398 | matchlist[matches] = (char *) |
c906108c SS |
1399 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1400 | if (word == text) | |
1401 | strcpy (matchlist[matches], ptr->name); | |
1402 | else if (word > text) | |
1403 | { | |
1404 | /* Return some portion of ptr->name. */ | |
1405 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1406 | } | |
1407 | else | |
1408 | { | |
1409 | /* Return some of text plus ptr->name. */ | |
1410 | strncpy (matchlist[matches], word, text - word); | |
1411 | matchlist[matches][text - word] = '\0'; | |
1412 | strcat (matchlist[matches], ptr->name); | |
1413 | } | |
1414 | ++matches; | |
1415 | } | |
1416 | ||
1417 | if (matches == 0) | |
1418 | { | |
b8c9b27d | 1419 | xfree (matchlist); |
c906108c SS |
1420 | matchlist = 0; |
1421 | } | |
1422 | else | |
1423 | { | |
c5aa993b JM |
1424 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1425 | * sizeof (char *))); | |
c906108c SS |
1426 | matchlist[matches] = (char *) 0; |
1427 | } | |
1428 | ||
1429 | return matchlist; | |
1430 | } | |
1431 | ||
1432 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1433 | ||
1434 | /* Return a vector of char pointers which point to the different | |
1435 | possible completions in CMD of TEXT. | |
1436 | ||
1437 | WORD points in the same buffer as TEXT, and completions should be | |
1438 | returned relative to this position. For example, suppose TEXT is "foo" | |
1439 | and we want to complete to "foobar". If WORD is "oo", return | |
1440 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1441 | ||
1442 | char ** | |
53904c9e AC |
1443 | complete_on_enum (const char *enumlist[], |
1444 | char *text, | |
1445 | char *word) | |
c906108c SS |
1446 | { |
1447 | char **matchlist; | |
1448 | int sizeof_matchlist; | |
1449 | int matches; | |
1450 | int textlen = strlen (text); | |
1451 | int i; | |
53904c9e | 1452 | const char *name; |
c906108c SS |
1453 | |
1454 | sizeof_matchlist = 10; | |
1455 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1456 | matches = 0; | |
1457 | ||
1458 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1459 | if (strncmp (name, text, textlen) == 0) | |
1460 | { | |
1461 | if (matches == sizeof_matchlist) | |
1462 | { | |
1463 | sizeof_matchlist *= 2; | |
c5aa993b | 1464 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1465 | (sizeof_matchlist |
1466 | * sizeof (char *))); | |
1467 | } | |
1468 | ||
c5aa993b | 1469 | matchlist[matches] = (char *) |
c906108c SS |
1470 | xmalloc (strlen (word) + strlen (name) + 1); |
1471 | if (word == text) | |
1472 | strcpy (matchlist[matches], name); | |
1473 | else if (word > text) | |
1474 | { | |
1475 | /* Return some portion of name. */ | |
1476 | strcpy (matchlist[matches], name + (word - text)); | |
1477 | } | |
1478 | else | |
1479 | { | |
1480 | /* Return some of text plus name. */ | |
1481 | strncpy (matchlist[matches], word, text - word); | |
1482 | matchlist[matches][text - word] = '\0'; | |
1483 | strcat (matchlist[matches], name); | |
1484 | } | |
1485 | ++matches; | |
1486 | } | |
1487 | ||
1488 | if (matches == 0) | |
1489 | { | |
b8c9b27d | 1490 | xfree (matchlist); |
c906108c SS |
1491 | matchlist = 0; |
1492 | } | |
1493 | else | |
1494 | { | |
c5aa993b JM |
1495 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1496 | * sizeof (char *))); | |
c906108c SS |
1497 | matchlist[matches] = (char *) 0; |
1498 | } | |
1499 | ||
1500 | return matchlist; | |
1501 | } | |
1502 | ||
f436dd25 MH |
1503 | |
1504 | /* check function pointer */ | |
1505 | int | |
1506 | cmd_func_p (struct cmd_list_element *cmd) | |
1507 | { | |
1508 | return (cmd->func != NULL); | |
1509 | } | |
1510 | ||
1511 | ||
1512 | /* call the command function */ | |
1513 | void | |
1514 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1515 | { | |
1516 | if (cmd_func_p (cmd)) | |
1517 | (*cmd->func) (cmd, args, from_tty); | |
1518 | else | |
1519 | error ("Invalid command"); | |
1520 | } | |
1521 | ||
1522 |